What is the answer to the equation 4 (3.8 + x) divided by 2 = 20?

What is the answer to the equation 4 (3.8 + x) divided by 2 = 20?

4(3.8+x)÷2=20
2(3.8+x)=20
Divide two sides by two
3.8+x=10
x=10-3.8
x=6.2

Solve the equation (20 divided by 8 = x)

20÷8=x
So x = 2.5

2.5 times of a number is 12 less than 5 / 8 of 20. What is the number? (solution of the equation)

Let this number be X
20*5/8-2.5X=12
2.5X=0.5
X=0.2
This number is 0.2

25 percent of a certain number minus 2 equals 40 percent of 16. What's the number?

Let this number be X
Then 25% X-2 = 16 × 40%
That is, 0.25x = 2 + 6.4
That is 0.25x = 8.4
That is, 1 / 4x = 8.4
That is, x = 33.6